Slater Skins New High Flow Air Filter Cover for the Yamaha:
YZ250F 2019-2023
YZ250FX 2020-2023
YZ450F 2018-2022
YZ450FX 2019-2023
WR450F 2019-2023
WR250F 2020-2023
 
Simply the cheapest way to Increase bottom end and midrange is with the Slater Skins High Flow Air Box Cover. Noticeable power improvement over the stock cover.
 
Increased airbox size and ram airpower increase
With the increased air flow is a huge improvements over stock
Adds big HP and throttle response and allows your bike to rev further
Comes with washer clip to use with stock Dzus fastener
Plastic molded, Lightweight, custom fit
Simple bolt-on
Made in the USA